High-end alkalinity test kit for serious aquarium hobbyists. Maintaining proper carbonate hardness and alkalinity is essential for all types of aquariums, especially marine reef aquariums. Carbonate hardness and alkalinity has an intricate relationship with pH, calcium, the buffering capacity of aquarium water, as well as healthy coral growth. The Salifert Carbonate Hardness/Alkalinity Test Kit is very sensitive and measures changes in alkalinity levels in 0.3 dKH or 0.1 meq/L increments. For marine or freshwater aquarium use. 100 - 200 tests.

Range: 0.3 to 32.0 KH or 0.11 to 11.42 meg/L.

Please click on "More Information" for instructions.

Instructions:

Use the syringe and add 4 ml of water in the test vial. For a lower resolution and more tests per kit add 2 ml instead of 4 ml.

Shake the KH-Ind bottle a few times and add 2 drops in the test vial (1 drop for the low resolution mode).

Put the plastic tip firmly on the syringe. Make sure the plastic tip of the syringe is constantly submersed in the KH reagent. Then draw the KH reagent into the syringe until the lower end of the black piston is exactly at the 1.00 ml mark. There will be some air present just below the piston. This is the air that was present between the end of the plastic tip and the piston. This will not influence the test result.

Add the KH reagent in the syringe, one drop at a time, to the water in the test tube. Swirl after each drop and continue this process until the color changes from blue/green to orange-red or pink color (whichever color is observed first).

Hold the syringe with the tip facing upward and read the position of the black piston. The syringe has graduations of 0.01 ml.

Don't take the quality of your tap water for granted. If you draw your water from a well, nature may not be providing you the perfect balance. If you are using tap water from your municipal department, it likely includes minerals and additives.

Serious hobbyists know that the best way to measure the salinity and specific gravity of aquarium water is to use a refractometer. These precision optical instruments are incredibly accurate even at very low salt levels, and are equally easy to use.

Testing your water parameters is an important method of foreseeing problems in your aquatic ecosystem before they result in catastrophe. Luckily, tools that were once only accessible (and affordable) to advanced hobbyists have since become simpler.

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Rated 4.6 out of 5 by 5
reviewers.

Rated 5 out of 5 by JointhyRevolution solid easy and extremely accurate- must for reef tanks
I tried many. This is the easiest and most accurate. I tried almost every brand. KH Profi Test from Salifert is outstanding.
If your running Zeo, Triton, near NSW levels, high Kh with high bio-load this is the only KH test you need. Why? ( see below).
1) No fidgeting with multiple reagents. add 4ml to test vial (ok, that is simple and you dont need lots of tank water samples- Winning).
2) One reagent (shake and add 4 drops- so far really easy..oh, and no swirling or shaking for another minute- Winning again).
3) Fill titrant to 1mL and drop-by-drop add until the end point is reached, and the end point is VERY obvious-that's it? (Yep. Winning again).
4) Cross reference your results and your done ( no math, no hangups- WINNER!)
This product from Salifert is simple, provides fast results and it is extremely accurate. Less time titration= happy significant other. -You get my point. Thank you Salifert, and thank you Dr. Foster & Smith for carrying this choice product.
January 18, 2016

Rated 5 out of 5 by MarineSniper8541 Best Test Kit Available
With alkalinity bring one of the most important aspects of a successful reef tank, an accurate test kit is a must; especially if you're dosing for it
The Salifert may be more than some of the others but consistently delivers accurate, easy to read results. Vital for knowing what your level is and how much to dose dose
March 26, 2013

Rated 5 out of 5 by Simone This product is excellent
I've being using this product since I have my saltwater and I don't have any complaints. Very accurate
January 26, 2012

Rated 4 out of 5 by spauls820 A GOOD CHOICE
When it comes to testing aquarium water for any parameter I imagine most of us would love to have a really fast, simple way to do it. Well, unfortunately it isn't always so simple. There are probes and meters and such, which are expensive if they are accurate. There are simpler tests which may or not be accurate. Then there are better and more accurate tests which cost a little more and require more time and patience on your part. The Salifert test falls into this latter category. It seems a little daunting to a novice, but with patience it can be done and is probably more accurate than some cheaper, simpler tests. I found my alkalinity to be on the high side, which is better than the opposite but not ideal. All in all this product does a fine job and I recommend it over any other brand. A good investment if you are into testing (which you should be ! ).
July 9, 2015